docs: def revoke_access(src, dst='any', port=None, proto=None):
      """
      Revoke access to an address or subnet
  
      :param src: address (e.g. 192.168.1.234) or subnet
                  (e.g. 192.168.1.0/24).
      :param dst: destiny of the connection, if the machine has multiple IPs and
                  connections to only one of those have to accepted this is the
                  field has to be set.
      :param port: destiny port
      :param proto: protocol (tcp or udp)
      """
      return modify_access(src, dst=dst, port=port, proto=proto, action='delete')